A new study by Harvard University scientists found that nearly half of all U.S. children and teenagers are not getting enough water.

While researchers note that American children are not dying for lack of water, mild dehydration can cause problems such as headaches, irritability, poorer physical performance and reduced cognitive functioning.

Chairman of the Department of Urology and Chief of Robotic Surgery at Lenox Hill Hospital Dr. David Samadi appeared on "America's News Headquarters" today to share his valuable perspective on this study.

Dr. Samadi explained that dehydration and under-hydration are big problems for children because they will damage all parts of the body, including the brain, heart, kidneys and colon.

Dr. Samadi noted that boys are at a 76 percent greater risk of under-hydration than girls, so particular attention should be paid to males.

He added that many children don't want to drink water because it's bland compared to sugary, syrupy drinks.

"Number one, schools have to have real access for kids to do that," Dr. Samadi said, pointing out that simply adding fruits such as strawberries or limes to a glass of water can make it much more interesting and palatable for children.

The recommended amount is eight to ten cups of water per day, so anything that helps kids achieve that is valuable, Dr. Samadi explained.

Watch the "America's News Headquarters" clip above.

See more from Dr. Samadi on Fox News Insider:

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